list的两种排序方法(一）

最新推荐文章于 2022-09-20 11:29:39 发布

le6peer

最新推荐文章于 2022-09-20 11:29:39 发布

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public static void main(String[] args) {
//	writeObject();
	readObject();
}
public static void writeObject() {
	Person person1 = new Person(1, "张三", 20, "男");
	Person person2 = new Person(2, "李四", 24, "男");
	Person person3 = new Person(3, "王五", 18, "男");
	Person person4 = new Person(4, "赵六", 22, "男");
	List<Person> list = Arrays.asList(person1,person2,person3,person4);
	Collections.sort(list, new Comparator<Person>() {
		@Override
		public int compare(Person o1, Person o2) {
			if(o1.getAge()>o2.getAge()) {
				return 1;
			}
			if(o1.getAge()==o2.getAge()) {
				return 0;
			}
				return -1;
		}
	});